+#if defined(CONFIG_ARM) || defined(CONFIG_ARM64)
+ /*
+ * At runtime, the firmware has no way to find out where the
+ * sglist elements are mapped, if they are mapped in the first
+ * place. Therefore, on architectures that can only perform
+ * cache maintenance by virtual address, the firmware is unable
+ * to perform this maintenance, and so it is up to the OS to do
+ * it instead.
+ */
+ efi_capsule_flush_cache_range(sglist, PAGE_SIZE);
+#endif
+ kunmap_atomic(sglist);